The Kürnberg Forest near Linz is an enchanted territory with rich oak and beech trees. Now in autumn, the acorns fall to the ground with a loud clacking sound and define their own, idiosyncratic rhythm. He accompanies visitors as they wind their way up steep paths. Until they finally reach a clearing where the sounds of nature and ships on the nearby Danube mix with a sinister hum rising from the forest floor. It is the 8th symphony of Anton Bruckner. However, it slows down so much that even with the best will in the world you can no longer recognize any melodies or compositional developments. The Sound forest is a technically complex project in which the duration of all ten symphonies by the sound creator is stretched over ten months and they are projected into the forest via a buried loudspeaker.